Table 1 Example of search string

Database: Medline

Limits: 01/01/2014—present; Human; English

# Results: 4755

1

(MH "Frail Elderly")

2

TI ageing OR AB ageing

3

TI old* OR AB old*

4

TI elder* OR AB elder*

5

TI senior* OR AB senior*

6

TI geriatric* OR AB geriatric*

7

TI aging OR AB aging

8

OR—1/7

9

(MH "Telemedicine")

10

TI e-health OR AB e-health

11

TI ehealth OR AB ehealth

12

TI m-health OR AB m-health

13

TI mhealth OR AB mhealth

14

TI "digital health" OR AB "digital health"

15

TI "health technolog*" OR AB "health technolog*"

16

TI telemedicine OR AB telemedicine

17

OR—10/16

18

(MH "Pharmaceutical Services, Online")

19

(MH "Video-Assisted Techniques and Procedures")

20

(MH "Appointments and Schedules")

21

(MH "Shared Medical Appointments")

22

(MH "Health Services for the Aged")

23

OR—18/22

24

(MH "Digital Technology")

25

(MH "Online Systems")

26

(MH "Smartphone")

27

(MH "Mobile Applications")

28

(MH "Computers, Handheld")

29

(MH "Computer Systems")

30

OR—24/29

31

8 AND 17 AND 23 AND 30